Gemstone



FIG. 1 is a top perspective view of the gemstone;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a 45° side view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for a gemstone, as shown and described. 